RT CBRC EXAM 1 Questions with Correct Answers 2025/2026

RT CBRC EXAM 1 Questions with Correct Answers 2025/2026 Inhaled NO - Correct Answer Pulmonary vasodilator of capillaries surrounding well ventilated alveoli Deactivates once it enters the bloodstream Starting dose: 20ppm iNO indications - Correct Answer Increased PVR Pulmonary HTN Refractory hypoxemia, ARDS Acute pulmonary embolism COPD Spontaneous breathing trials & intolerance - Correct Answer PSV 5/PEEP 5 for 30 minutes and max of 2 hours. intolerance: RR >35, Sao2 < 90, HR > 140, SBP <90 or > 180, f/VT > 105. critical opening pressure (Is this the Upper or Lower Inflection Point) - Correct Answer the point at which MOST alveoli are open Lower Inflection Point Complications of iNO - Correct Answer Toxic in high concentrations Toxic byproducts: MetHb (keep below 2.5%) NO2 (keep below <2ppm) Metahemoglobin - Correct Answer Ability to carry oxygen throughout the body, but unable to release it. Therefore toxic. Premature c